Device is protected with extra seals to prevent failures due to any kind of weather.

3.thickness

8.4mm

10.5mm

7.9mm

7.7mm

8.5mm

8.5mm

Best

Asus Zenfone AR 64GB

4.6mm

4.width

81.2mm

59mm

73.9mm

72.6mm

68.7mm

68.7mm

Best

Vertu Signature for Bentley

42mm

5.height

160.9mm

115.5mm

153.5mm

150.9mm

147.7mm

147.7mm

Best

Motorola FlipOut

67mm

6.has a QWERTY keyboard

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

Text messaging is much faster due to a hardware keyboard.

Display

1.resolution

1080 x 1920px

640 x 480px

1440 x 2560px

1440 x 2560px

1440 x 2960px

1440 x 2960px

Best

Sony Xperia H8541

2160 x 4320px

2.pixel density

367ppi

325ppi

518ppi

534ppi

570ppi

570ppi

Best

Sony Xperia H8541

847ppi

3.has branded damage resistant glass

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

Damage resistant glass (such as Corning Gorilla Glass or Asahi Dragontrail Glass) is thin, lightweight, and can withstand high levels of force.

4.screen size

6"

2.46"

5.7"

5.5"

5.8"

5.8"

The bigger the screen size is, the better the user experience.

Best

Huawei Mate 20 X

7.2"

5.every pixel has three subpixels

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

The device has a display with three full subpixels per pixel, resulting in a sharp and crisp picture. Pixels in some displays (like AMOLED) share one subpixel to preserve space. This can result in a less crisp, slightly blurred image.

6.Has an AMOLED display

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

AMOLED displays, also known as active matrix OLED displays, offer higher refresh rates and consume less power than other types of displays.

Performance

1.Has integrated LTE

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

The system on a chip (SoC) has an integrated LTE cellular chip. LTE is capable of downloading at faster speeds than older, 3G technology.

2.Has integrated graphics

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

With integrated graphics you don’t need to buy a separate graphics card.

3.Has out-of-order execution

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

Out-of-order execution is used in CPUs to make use of instruction cycles that would normally be wasted due to delays.

4.Has AES

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

AES is used to speed up encryption and decryption.

5.Has dynamic frequency scaling

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

Dynamic frequency scaling is a technology that allows the processor to conserve power and reduce noise when it is under a light load.

6.RAM

3GB

0.3GB

4GB

4GB

4GB

4GB

Best

Vivo NEX 2

10GB

Cameras

1.has built-in optical image stabilization

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

Optical image stabilization uses gyroscopic sensors to detect the vibrations of the camera. The lens adjusts the optical path accordingly, ensuring that any type of motion blur is corrected before the sensor captures the image.

2.video recording (main camera)

1080 x 30fps

720 x 25fps

2160 x 30fps

2160 x 30fps

2160 x 60fps

2160 x 60fps

The maximum resolution available for videos shot with the main camera. Although it may be possible to choose among other frame rates, those recordings usually have lower resolutions.

Best

Crosscall Trekker-X4

1080 x 120fps

3.Has phase detection autofocus for photos

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

A phase detection autofocus is much faster than a contrast detection autofocus, allowing for sharper images.

4.Has laser autofocus

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

A laser autofocus system quickly determines the depth of the subject you want to focus on, allowing you to take photos much faster.

For example

Huawei Honor Magic 2

5.has a front camera

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

A front camera, also called secondary camera, can be used for video chats/selfies.

6.Has a dual-lens (or multi-lens) main camera

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

A dual-lens camera captures two images and overlays them. This technology creates sharper images, especially in low light conditions, and allows you to use effects such as softening the background.

For example

Vivo Z1 Lite

Audio

1.has stereo speakers

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.

2.has a socket for a 3.5 mm audio jack

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

With a standard mini jack socket, you can use the device with most headphones.

3.number of microphones

2

2

2

2

2

2

More microphones result in better sound quality and enable the device to filter out background noise.

Best

Motorola Moto Z3

4

4.has a radio

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

It works as an FM radio with included headsets

5.has dedicated media keys

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

The music player can be blindly used.

For example

ZTE Nubia X

Battery

1.battery power

5000mAh

1500mAh

3500mAh

3600mAh

3000mAh

3000mAh

Best

Energizer Power Max P16K Pro

16000mAh

2.Has an ultra power save mode

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

The device can save battery by using just a black-and-white screen with a few basic icons. This means even with a small amount of battery, you can keep the device running for a long time.

For example

Oppo A7

3.wireless charging

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

The manufacturer offers a branded wireless charging kit. To charge the device, you simply put it down on its charging base.

4.has a removable battery

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

The battery is removable and can be replaced by the user if broken.

5.Supports fast charging

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

Fast charging technologies, like Qualcomm’s Quick Charge or MediaTek’s Pump Express, are used to reduce the time it takes to charge a device. For example, with Quick Charge 3.0, the battery can be charged to 50% in just 30 minutes.

6.has a battery level indicator

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

An indicator shows you when the device has low battery.

Features

1.Is a multi-user system

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

2.Has offline voice recognition

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

Offline voice recognition enables you to perform voice actions, like dictating texts or using various voice commands, without an internet connection.

3.Supports Java

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

4.Allows app installs on the device's external storage

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

5.Is free and open source

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

Anyone is free to use, copy, study, and change the software in any way, and the source code is openly shared so that people are encouraged to voluntarily improve the design of the software.

6.Has sharing intents

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

If an app has sharing capabilities and the developers have indicated it, the app will automatically appear in your list of sharing options. Some OS’s limit direct sharing options to a select few apps, which means you have to open apps separately in order to upload the files you want to share.

Miscellaneous

1.Has a built-in FM transmitter

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

Built-in FM transmitter allows you to wirelessly stream music from your device to any radio, e.g. in your car, at a predefined frequency.

For example

T-Mobile Doubleshot

2.supports AVCHD format

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

AVCHD (Advanced Video Coding High Definition) is a file-based format for the digital recording and playback of high-definition video. It's a standard popular among professional cameras and camcorders.

For example

Coolpad Quattro 4G

3.has a dedicated Facebook key

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

Whenever the Facebook key lights up contents can be quickly shared by pressing it.

For example

HTC Cha Cha

4.Is a system camera

Blu Energy XL

Nokia E6

Samsung Galaxy Note 7 (Snapdragon 820)

Samsung Galaxy S7 edge (Exynos 8890 Octa)

Samsung Galaxy S9

Samsung Galaxy S9 (Qualcomm Snapdragon 845)

A system camera has lots of changeable parts such as lenses, flashes and other accessories. They offer greater flexibility than compact cameras.